C++ (Cpp) HuffCodeMap Examples

Example #1

File: huffman.cpp Project: mvwicky/NotesMiscellanea

int main(){
	int frequencies[UniqueSymbols] = {0};
	const char *ptr = SampleString;
	while (*ptr != '\0')
		++frequencies[*ptr++];

	iNode *root = buildTree(frequencies);

	HuffCodeMap codes;
	generateCodes(root, HuffCode(), codes);
	delete root;

	for (HuffCodeMap::const_iterator it = codes.begin(); it != codes.end(); it++){
		std::cout << it->first << " ";
		std::copy(it->second.begin(), it->second().end(), std::ostream_iterator<bool>(std::cout));
		std::cout << std::endl;
	}
	return 0;
}

Example #2

File: main.cpp Project: znoraka/master2

void huffman(OCTET *in, int width, int height) {
  int frequencies[UniqueSymbols] = {0};
 
  for (int i = 0; i < width * height; i++) {
    frequencies[in[i]]++;
  }

  INode* root = BuildTree(frequencies);

  HuffCodeMap codes;
  GenerateCodes(root, HuffCode(), codes);
  delete root;
  std::stack<bool> *vec = new std::stack<bool>();
  for (int i = 0; i < width * height; i++) {
    HuffCode c = codes.find(in[i])->second;
    std::for_each(c.begin(), c.end(), [=](bool b) {
	vec->push(b);
      });
    if(vec->size() > 8) {
      std::cout << toChar(vec);
    }
  }
}

Example #3

File: Huffman.cpp Project: 9irbis/ds-algo-implementations

int main()
{
    string text;
    cout << "Enter your line of text below:\n";
    getline(cin, text);
    const char* ptr = text.c_str();
    int frequencies[UNIQUE_SYMBOLS] = {0};
    while (*ptr != '\0')
        ++frequencies[*ptr++];
    INode* root = buildTree(frequencies);
    HuffCodeMap codes;
    generateCodes(root, HuffCode(), codes);
    delete root;
    
    for(HuffCodeMap::const_iterator it = codes.begin(); it != codes.end(); ++it)
    {
        cout << it->first << " ";
        copy(it->second.begin(), it->second.end(),
        ostream_iterator<bool>(cout));
        cout << endl;
    }
    return 0;
}

Example #4

File: huffman.cpp Project: Ooya/M2-IMAGINA

int main(int argc, char* argv[])
{

    char cNomImgLue[250], cNomImgOut[250];
    int nH, nW, nTaille;

    if (argc != 2) {
        printf("Usage: ImageIn.pgm\n"); 
        exit (1) ;
    }

    sscanf (argv[1],"%s",cNomImgLue);

    OCTET *ImgIn;

    lire_nb_lignes_colonnes_image_pgm(cNomImgLue, &nH, &nW);
    nTaille = nH * nW;

    allocation_tableau(ImgIn, OCTET, nTaille);
    lire_image_pgm(cNomImgLue, ImgIn, nH * nW);

    // Build frequency table
    int frequencies[UniqueSymbols] = {0};
    //const char* ptr = SampleString;
    //while (*ptr != '\0')
    //    ++frequencies[*ptr++];

    for (int i = 0; i < nW; i++){
        for (int j = 0; j < nH; j++){
            frequencies[ImgIn[i*nW+j]]++;
        }
    }


    INode* root = BuildTree(frequencies);

    HuffCodeMap codes;
    GenerateCodes(root, HuffCode(), codes);
    delete root;

    // for (HuffCodeMap::const_iterator it = codes.begin(); it != codes.end(); ++it){
    //     cout << it->first << " ";
    //     copy(it->second.begin(), it->second.end(),
    //               std::ostream_iterator<bool>(std::cout));
    //     cout << std::endl;
    // }

    stringstream ss;
    int cpt = 0;
    for (int i = 0; i < nW; i++){
        for (int j = 0; j < nH; j++){
            for (HuffCodeMap::const_iterator it = codes.begin(); it != codes.end(); ++it){
                if(it->first == ImgIn[i*nW+j]){
                    for(int k =0; k< it->second.size();k++){
                        ss << it->second[k];
                    }
                }
            }
        }
    }
    string all = ss.str();
    for (int i = 0; i < all.size(); i+=8){
        char c = strtol(all.substr(i,8).c_str(),0,2);
        cout << c;
    }

    //écriture de l'image
    //ecrire_image_pgm(cNomImgOut, ImgOut,  nH, nW);
    free(ImgIn);
    return 1;
}